一、引言对有证标准样品 (以下简称ＣＲＭ)最重要最具有独特性的应用是对专业技术测量过程 (以下简称试验方法 )的测量准确性和有效性的验证和确认。众所周知 ,绝大多数专业技术试验方法涉及到测量原理、测量方法、测量程序步骤、被测量的特性特征、规定的测量环境条件、专用的 I. INTRODUCTION The most important and unique application of certified standard samples (hereinafter referred to as CRM) is the verification and confirmation of the measurement accuracy and validity of professional and technical measurement processes (hereinafter referred to as test methods). As we all know, the vast majority of professional and technical test methods related to the measurement principle, measurement methods, measurement procedures, the characteristics of the measured characteristics, the provisions of the measurement of environmental conditions, dedicated